<html>
<head>
<title>Analog Library</title>
<link rel="stylesheet" type="text/css" href="../../help.css">
</head>

<body bgcolor="FFFFFF">

<h1>Analog library</h1>

<p>The Analog library includes components that normally would not be necessary
for a purely digital design. 

<blockquote class="warning">Warning: Logisim's circuit simulator is a discrete event simulator
    using a four-valued logic: each bit can be zero (0), one (1), error (E),
    unknown (X). Propagation of signals through gates and wires is simulated in
    a very crude fashion, usually just one time step per gate or component and
    instantaneous transmission along wires. As such, only a very crude
    approximation is made to simulate the analog behavior of components. The
    components in this library are simplistic, and only meant for the most basic
    of educational purposes.</blockquote>

<table>
<tr><td align="right"><a href="const01.html">
	<img class="icon" src="../../../icons/power.gif">
	<img class="icon" src="../../../icons/ground.gif"></a></td>
	<td><a href="const01.html">Power, Ground</a> &mdash; signal source and sink</td></tr>
<tr><td align="right"><a href="transist.html">
	<img class="icon" src="../../../icons/trans0.gif">
	<img class="icon" src="../../../icons/trans1.gif"></a></td>
	<td><a href="transist.html">Transistor</a> &mdash; simplified PNP and NPN transistors</td></tr>
<tr><td align="right"><a href="transmis.html"><img class="icon" src="../../../icons/transmis.gif"></a></td>
	<td><a href="transmis.html">Transmission Gate</a> &mdash; block or transmit a signal</td></tr>
<tr><td align="right"><a href="pull.html"><img class="icon" src="../../../icons/pullshap.gif"></a>
        <!--<img class="icon" src="../../../icons/pullrect.gif"></a>--></td>
	<td><a href="pull.html">Pull Resistor</a> &mdash; weakly pull signal to a default value</td></tr>
</table>

<p><a href="../index.html">Up to <em>Library Reference</em></a></p>

</body>
</html>
